Finding the Third Proportional to 403,137 and 602,599.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,137 : 602,599.50 = 602,599.50 : x
2. Step 2: Convert to fraction form
   403,137/602,599.50 = 602,599.50/x
3. Step 3: Cross multiply
   403,137x = 602,599.50 × 602,599.50
4. Step 4: Simplify right side
   403,137x = 363,126,157,400.25
5. Step 5: Solve for x
   x = 363,126,157,400.25/403,137
6. Step 6: Final answer
   x = 900,751.25